When I plug my Garmin Nuvi 765T into my car charger, it does not charge. Has the cord gone bad? Can I charge my Garmin through my computer?

Hi Larry -

Your Nuvi 765T should light up when you connect it to your computer's USB port. If it doesn't, there may be a problem with the USB port. Try connecting to the other USB ports on the computer (or a different computer - such as one at work, etc.) if needed. This will help rule out a defective USB port on the computer. You can also connect to a USB charger for another device that you may have instead. It may not charge with another product's USB charger if it provides a very low power output though. The auto plug will not charge the Nuvi when it gets into this condition. Even if it does not light up, leave it plugged into the USB charger / or port over night.

Check the GTM20 traffic receiver plug. It has two LEDs on the body. The one closest to the power cord end is the Traffic Reception Status light and the the one closest to the plug end is the Power light. If either of these lights is on when connected to the Nuvi, the fuse is good. If not not, you may need to change out the fuse in the FM traffic receiver plug. The plug powers both the traffic reciever and Nuvi. Carefully spin off the bright metal ring to disassemble the end to access the fuse. Replace if it is open / blown. If you need replacement parts, they can be purchased from Amazon for about $6.

After charging over night via charger or USB port, disconnect the nuvi from the power / USB cord and turn on by sliding AND holding the power switch in place to turn it on. Keep it held in position for 10 - 15 seconds before letting it slide back. During this time, the Nuvi should start up.

If it will not power up, the battery may be unable to accept a charge. You can replace the battery yourself, but it requires a steady hand, jewelers tools, good eye sight and patience from people selling parts to do this on eBay for as little as $6. Here's a link to those auctions.

If you'd prefer not to do the work yourself, a second option would be to let Garmin handle the "repair". Your 765T is likely out of warranty, and garmin offers a "flat rate repair" fee of $99. If you opt to do this, you will send your 765T to garmin and they will send you a different 765T that has been factory refurbished; complete with the most recent maps available already installed and a gaurantee good for 90 days. Not a bad deal when you consider the cost of upgrading just the maps one time on the 765T. You can start the process on garmin's site, linked here. I have used this service myself and was quite happy with it.

I hope this helps & good luck!

sounds like the car charger is faulty that would be the thing to test first. get a multimeter and check the voltage.

That simply shows that the power adapter/cord is bad. To confirm it, all you need to do is to borrow another charger then plug your garmin nuvi on it to see if it charges, if it charges, then it means what you have to replace is your charger. The former battery is not bad since it can power on and off the gps.
Solution, Get a new charger for your garmin nuvi 660 gps receiver. Am very well convinced that,replacing the charger will do the job.
Hope this piece of information helped.

if its an oem garmin charger and the green light is on and still wont charge, then the problem is most likely the power port on the back of your garmin...if its not the factory charger, get one for a garmin..that should solve your problem...if not, let me know


let me know if you need more help or info

Bill
EX

Standing Member of G.O.T.

Most likely the fuse in the charger plug has blown. The plug that goes into the cigarette lighter socket has a ring near the end. On most chargers it's silver but some of them are black. If you unscrew this ring the plug comes apart. Be careful not to lose any parts. You'll see the fuse in there. Replace it and it should be ok.
The other possibility is that the cigarette lighter socket is not working. You can check that easily enough by trying something else in it.

It appears that your car charging cable has gone bad based on the symptoms.

It's most likely that the fuse in the plug of the charger lead has blown. There's a ring at the top of the charger plug. Unscrew this and the plug comes apart. You'll see the fuse inside. Be careful not to lose any parts.

Unfortunately, there is not a lot of easy user troubleshooting for Garmin units. I will note that the AC adapter that plugs in the USB port will give the unit more power than a USB connection to a computer or the 12vDC car adapter. If you've tried connecting it to the AC adapter and it still won't come on, it is possible the internal battery has gone bad and is consuming more power than the supply can produce to both charge and power up the unit. You can try leaving it plugged into the AC adapter for an hour or so and then trying to power it up with the AC adapter plugged in.

Let me know what you've done so far to troubleshoot and I'll research some more for you.

Download the Garmin Communicator Plugin and Web Updater software from Garmin's website - both tools are free and will load the proper USB drivers for your 765T.

Ensure that the battery is fully charged via the battery strength icon, prior to aquiring satellites.

To reset the 765T: Hold finger or thumb on lower right hand corner of screen while powering the unit on from the off position. This will erase all user data.

When your Garmin GPS power not turn on or not charge on there are various reason behind.

May be used the dead battery or damaged power cable to resolve these issue replaced the battery or power cable.

When your Garmin GPs is not charged your screen show pending Garmin GPS map updates. To resolve these issue update, the latest Version of GPS Map updates.

Also ,Read these Blogs : https://gpsmapzz.com/blogs/how-to-fix-garmin-gps-wont-charge-issue

https://gpsmapzz.com/blogs/why-my-garmin-wont-turn-on-guide-to-fix-it

Learn more how to troubleshoot your Garmin issue.